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Wiki source code of Water Quality Sensors

Version 45.62 by Xiaoling on 2024/08/06 14:44
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1 **Table of Contents:**
2
3 {{toc/}}
4
5
6
7
8 = 1. DR-ECK Water EC Probe =
9
10 == 1.1 Specification: ==
11
12
13 * **Power Input**: DC7~~30
14 * **Power Consumption** : < 0.5W
15 * **Interface**: RS485. 9600 Baud Rate
16 * **EC Range & Resolution:**
17 ** **ECK0.01** : 0.02 ~~ 20 μS/cm
18 ** **ECK0.1**: 0.2 ~~ 200.0 μS/cm
19 ** **ECK1.0** : 2 ~~ 2,000 μS/cm  Resolution: 1 μS/cm
20 ** **ECK10.0** : 20 ~~ 20,000 μS/cm  Resolution: 10 μS/cm
21 * **EC Accuracy**: ±1% FS
22 * **Temperature Measure Range**: -20 ~~ 60 °C
23 * **Temperature Accuracy: **±0.5 °C
24 * **IP Rated**: IP68
25 * **Max Pressure**: 0.6MPa
26
27 == 1.2 Application for Different Range ==
28
29
30 [[image:image-20240714173018-1.png]]
31
32
33 == 1.3 Wiring ==
34
35
36 [[image:image-20240720172533-1.png||height="347" width="569"]]
37
38
39 == 1.4 Mechinical Drawing ==
40
41
42 [[image:image-20240714174241-2.png]]
43
44
45 == 1.5 Installation ==
46
47
48 **Electrode installation form:**
49
50 A: Side wall installation
51
52 B: Top flange installation
53
54 C: Pipeline bend installation
55
56 D: Pipeline bend installation
57
58 E: Flow-through installation
59
60 F: Submerged installation
61
62 [[image:image-20240718190121-1.png||height="350" width="520"]]
63
64 **Several common installation methods of electrodes**
65
66 When installing the sensor on site, you should strictly follow the correct installation method shown in the following picture. Incorrect installation method will cause data deviation.
67
68 A. Several common incorrect installation methods
69
70 [[image:image-20240718190204-2.png||height="262" width="487"]]
71
72 **Error cause:** The electrode joint is too long, the extension part is too short, the sensor is easy to form a dead cavity, resulting in measurement error.
73
74 [[image:image-20240718190221-3.png||height="292" width="500"]]
75
76 **Error cause: **Measurement error or instability may occur due to water flow not being able to fill the pipe or air accumulation at high altitudes.
77
78 B. Correct installation method
79
80 [[image:image-20240718190249-4.png||height="287" width="515"]]
81
82
83 == 1.6 Maintenance ==
84
85
86 * The equipment itself generally does not require daily maintenance. When an obvious fault occurs, please do not open it and repair it yourself, and contact us as soon as possible.
87 * If the electrode is not used for a long time, it can generally be stored in a dry place, but it must be placed (stored) in distilled water for several hours before use to activate the electrode. Electrodes that are frequently used can be placed (stored) in distilled water.
88 * Cleaning of conductivity electrodes: Organic stains on the electrode can be cleaned with warm water containing detergent, or with alcohol. Calcium and magnesium precipitates are best cleaned with 10% citric acid. The electrode plate or pole can only be cleaned by chemical methods or by shaking in water. Wiping the electrode plate will damage the coating (platinum black) on the electrode surface.
89 * The equipment should be calibrated before each use. It is recommended to calibrate it every 3 months for long-term use. The calibration frequency should be adjusted appropriately according to different application conditions (degree of dirt in the application, deposition of chemical substances, etc.).
90
91 == 1.7 RS485 Commands ==
92
93
94 RS485 signal (K1 default address 0x12; K10 default address 0x11):
95 Standard Modbus-RTU protocol, baud rate: 9600; check bit: none; data bit: 8; stop bit: 1
96
97
98 === 1.7.1 Query address ===
99
100
101 **send:**
102
103 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
104 |=(% style="width: 74.75px;background-color:#4F81BD;color:white" %)Original address|=(% style="width: 64.75px; background-color: rgb(79, 129, 189); color: white;" %)Function code|=(% style="width: 64.75px;background-color:#4F81BD;color:white" %)Address high|=(% style="width: 64.75px;background-color:#4F81BD;color:white" %)Address low|=(% style="width: 64.75px;background-color:#4F81BD;color:white" %)Quantity high|=(% style="width: 64.75px;background-color:#4F81BD;color:white" %)Quantity low|=(% style="width: 59.75px;background-color:#4F81BD;color:white" %)CRC16 low|=(% style="width: 59.75px;background-color:#4F81BD;color:white" %)CRC16 high
105 |(% style="width:99px" %)0XFE |(% style="width:72px" %)0X03|(% style="width:50px" %)0X00|(% style="width:42px" %)0X50|(% style="width:42px" %)0X00|(% style="width:42px" %)0X00|(% style="width:56px" %)0X51|(% style="width:56px" %)0XD4
106
107 If you forget the original address of the sensor, you can use the broadcast address 0XFE instead. When using 0XFE, the host can only connect to one slave, which can be used as a method of address query.
108
109
110 **response:**
111
112 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:512px" %)
113 |=(% style="width: 100px;background-color:#4F81BD;color:white" %)New address|=(% style="width: 110px;background-color:#4F81BD;color:white" %)Function code|=(% style="width: 106px; background-color: rgb(79, 129, 189); color: white;" %)Data length|=(% style="width: 93px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low|=(% style="width: 104px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
114 |(% style="width:99px" %)0X01|(% style="width:112px" %)0X03|(% style="width:106px" %)0X00|(% style="width:93px" %)0X20|(% style="width:104px" %)0XF0
115
116 === 1.7.2 Change address ===
117
118
119 For example: Change the address of the sensor with address 1 to 2, master → slave
120
121 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
122 |=(% style="width: 74.75px; background-color: rgb(79, 129, 189); color: white;" %)Original address|=(% style="width: 64.75px; background-color: rgb(79, 129, 189); color: white;" %)Function code|=(% style="width: 64.75px; background-color: rgb(79, 129, 189); color: white;" %)Address high|=(% style="width: 64.75px; background-color: rgb(79, 129, 189); color: white;" %)Address low|=(% style="width: 64.75px; background-color: rgb(79, 129, 189); color: white;" %)Quantity high|=(% style="width: 64.75px; background-color: rgb(79, 129, 189); color: white;" %)Quantity low|=(% style="width: 59.75px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low|=(% style="width: 59.75px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
123 |(% style="width:67px" %)0X01|(% style="width:76px" %)0X06|(% style="width:60px" %)0X00|(% style="width:50px" %)0X50|(% style="width:50px" %)0X00|(% style="width:50px" %)0X02|(% style="width:57px" %)0X08|(% style="width:56px" %)0X1A
124
125 If the sensor receives correctly, the data is returned along the original path.
126
127 (% style="color:red" %)**Note: If you forget the original address of the sensor, you can use the broadcast address 0XFE instead. When using 0XFE, the host can only connect to one slave, and the return address is still the original address, which can be used as a method of address query.**
128
129
130 === 1.7.3 Modify intercept ===
131
132
133 **send:**
134
135 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:512px" %)
136 |=(% style="width: 64px;background-color:#4F81BD;color:white" %)Address|=(% style="width: 64px;background-color:#4F81BD;color:white" %)Function code|=(% style="width: 64px;background-color:#4F81BD;color:white" %)Address high|=(% style="width: 64px;background-color:#4F81BD;color:white" %)Address low|=(% style="width: 64px;background-color:#4F81BD;color:white" %)Quantity high|=(% style="width: 64px; background-color: rgb(79, 129, 189); color: white;" %)Quantity low|=(% style="width: 64px;background-color:#4F81BD;color:white" %)CRC16 low|=(% style="width: 64px;background-color:#4F81BD;color:white" %)CRC16 high
137 |(% style="width:64px" %)0X01|(% style="width:112px" %)0X06|(% style="width:135px" %)0X00|(% style="width:126px" %)0X23|(% style="width:85px" %)0X00|(% style="width:1px" %)0X01|(% style="width:1px" %)0XF8|(% style="width:1px" %)(((
138 0X07
139 )))
140
141 Change the intercept of the sensor with address 1 to 10 (default 0), which is 0X000A in the command.
142
143 **response:**
144
145 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:512px" %)
146 |=(% style="width: 64px;background-color:#4F81BD;color:white" %)Address|=(% style="width: 64px;background-color:#4F81BD;color:white" %)Function code|=(% style="width: 64px;background-color:#4F81BD;color:white" %)Address high|=(% style="width: 64px;background-color:#4F81BD;color:white" %)Address low|=(% style="width: 64px;background-color:#4F81BD;color:white" %)Quantity high|=(% style="width: 64px; background-color: rgb(79, 129, 189); color: white;" %)Quantity low|=(% style="width: 64px;background-color:#4F81BD;color:white" %)CRC16 low|=(% style="width: 64px;background-color:#4F81BD;color:white" %)CRC16 high
147 |(% style="width:99px" %)0X01|(% style="width:112px" %)0X06|(% style="width:135px" %)(((
148 0X02
149 )))|(% style="width:126px" %)0X00|(% style="width:85px" %)0X00|(% style="width:1px" %)0X0A|(% style="width:1px" %)0X38|(% style="width:1px" %)(((
150 0X8F
151 )))
152
153 === 1.7.4 Query data ===
154
155
156 Query the data (EC,temperature) of the sensor (address 11), host → slave
157
158 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
159 |=(% style="width: 42px;background-color:#4F81BD;color:white" %)Address|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Function code|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Starting register address high|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Starting register address low|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Register length high|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Register length low|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
160 |(% style="width:99px" %)0X11|(% style="width:72px" %)0X03|(% style="width:64px" %)0X00|(% style="width:68px" %)0X00|(% style="width:70px" %)0X00|(% style="width:72px" %)0X02|(% style="width:56px" %)0XC6|(% style="width:56px" %)0X9B
161
162 If the sensor receives correctly, the following data will be returned, slave → host
163
164 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
165 |=(% style="width: 40px;background-color:#4F81BD;color:white" %)Address|=(% style="width: 59.75px; background-color: rgb(79, 129, 189); color: white;" %)Function code|=(% style="width: 59.75px; background-color: rgb(79, 129, 189); color: white;" %)Data length|=(% style="width: 59.75px; background-color: rgb(79, 129, 189); color: white;" %)Register 0 Data high|=(% style="width: 59.75px; background-color: rgb(79, 129, 189); color: white;" %)Register 0 Data low|=(% style="width: 59.75px; background-color: rgb(79, 129, 189); color: white;" %)Register 1 Data high|=(% style="width: 59.75px; background-color: rgb(79, 129, 189); color: white;" %)Register 1 Data low|=(% style="width: 59.75px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low|=(% style="width: 59.75px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
166 |(% style="width:99px" %)0X11|(% style="width:72px" %)0X03|(% style="width:68px" %)0X04|(% style="width:70px" %)0X02|(% style="width:72px" %)0XAE|(% style="width:56px" %)0X01|(% style="width:56px" %)0X64|(% style="width:56px" %)0X8B|(% style="width:56px" %)0XD0
167
168 The address of the EC K10 sensor is 11
169
170 The query data command is 11 03 00 00 00 02 C6 9B
171
172 **For example**, the returned data is 11 03 04 (% style="color:red" %)**02 AE**(%%) 01 64 8B D0. 02 AE is converted to decimal 686,  K=10, EC: 6860uS/cm,temperature: 35.6℃ Convert the returned data to decimal and divide by 10.
173
174
175 Query the data (EC,temperature) of the sensor (address 11), host → slave
176
177 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
178 |=(% style="width: 42px;background-color:#4F81BD;color:white" %)Address|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Function code|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Starting register address high|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Starting register address low|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Register length high|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Register length low|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
179 |(% style="width:99px" %)0X12|(% style="width:72px" %)0X03|(% style="width:64px" %)0X00|(% style="width:68px" %)0X00|(% style="width:70px" %)0X00|(% style="width:72px" %)0X02|(% style="width:56px" %)0XC6|(% style="width:56px" %)0XA8
180
181 If the sensor receives correctly, the following data will be returned, slave → host
182
183 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
184 |=(% style="width: 40px;background-color:#4F81BD;color:white" %)Address|=(% style="width: 59.75px; background-color: rgb(79, 129, 189); color: white;" %)Function code|=(% style="width: 59.75px; background-color: rgb(79, 129, 189); color: white;" %)Data length|=(% style="width: 59.75px; background-color: rgb(79, 129, 189); color: white;" %)Register 0 Data high|=(% style="width: 59.75px; background-color: rgb(79, 129, 189); color: white;" %)Register 0 Data low|=(% style="width: 59.75px; background-color: rgb(79, 129, 189); color: white;" %)Register 1 Data high|=(% style="width: 59.75px; background-color: rgb(79, 129, 189); color: white;" %)Register 1 Data low|=(% style="width: 59.75px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low|=(% style="width: 59.75px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
185 |(% style="width:99px" %)0X12|(% style="width:72px" %)0X03|(% style="width:68px" %)0X04|(% style="width:70px" %)0X02|(% style="width:72px" %)0XAE|(% style="width:56px" %)0X01|(% style="width:56px" %)0X64|(% style="width:56px" %)0XB8|(% style="width:56px" %)0XD0
186
187 The address of the EC K1 sensor is 12
188
189 The query data command is 12 03 00 00 00 02 C6 A8
190
191 **For example**, the returned data is 12 03 04 (% style="color:red" %)**02 AE**(%%) 01 64 B8 D0. 02 AE is converted to decimal 686,  K=1, EC: 686uS/cm,temperature: 35.6℃ Convert the returned data to decimal and divide by 10.
192
193
194 === 1.7.5 Calibration Method ===
195
196
197 This device uses one-point calibration, and you need to prepare a known E standard solution. When mileage K=1, 1~~2000 uses 1413μS/cm standard solution, and when mileage K=10, 10~~20000 uses 12.88mS/cm standard solution.
198
199 **The calibration steps are as follows:**
200 (1) Place the electrode in distilled water and clean it. When mileage 1~~2000 uses 1413μS/cm standard solution, enter the following calibration command after the data is stable.
201
202 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
203 |=(% style="width: 42px;background-color:#4F81BD;color:white" %)Address|=(% style="width: 53px;background-color:#4F81BD;color:white" %)Function code|=(% style="width: 53px;background-color:#4F81BD;color:white" %)Address high|=(% style="width: 53px;background-color:#4F81BD;color:white" %)Address low|=(% style="width: 53px;background-color:#4F81BD;color:white" %)Quantity high|=(% style="width: 53px; background-color: rgb(79, 129, 189); color: white;" %)Quantity low|=(% style="width: 53px; background-color: rgb(79, 129, 189); color: white;" %)Data length|=(% style="width: 53px;background-color:#4F81BD;color:white" %)Data|=(% style="width: 53px;background-color:#4F81BD;color:white" %)CRC16 low|=(% style="width: 53px;background-color:#4F81BD;color:white" %)CRC16 high
204 |(% style="width:99px" %)0X12|(% style="width:112px" %)0X10|(% style="width:135px" %)0X00|(% style="width:126px" %)0X26|(% style="width:85px" %)0X00|(% style="width:1px" %)0X02|(% style="width:1px" %)0X04|(% style="width:1px" %)(((
205 0X00
206 0X00
207 0X37
208 0X32
209 )))|(% style="width:1px" %)0XBD|(% style="width:1px" %)0XFC
210
211 1413*10 gives 0X00003732
212
213 **response:**
214
215 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
216 |=(% style="width: 42px;background-color:#4F81BD;color:white" %)Address|=(% style="width: 68px;background-color:#4F81BD;color:white" %)Function code|=(% style="width: 68px;background-color:#4F81BD;color:white" %)Address high|=(% style="width: 68px;background-color:#4F81BD;color:white" %)Address low|=(% style="width: 68px;background-color:#4F81BD;color:white" %)Quantity high|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Quantity low|=(% style="width: 68px;background-color:#4F81BD;color:white" %)CRC16 low|=(% style="width: 68px;background-color:#4F81BD;color:white" %)CRC16 high
217 |(% style="width:99px" %)0X12|(% style="width:112px" %)0X10|(% style="width:135px" %)0X00|(% style="width:126px" %)0X26|(% style="width:85px" %)0X00|(% style="width:1px" %)0X02|(% style="width:1px" %)0XA2|(% style="width:1px" %)0XA0
218
219 (2) Place the electrode in distilled water to clean it. Use 12.88mS/cm standard solution for the range of 10~~20000. After the data is stable, enter the following calibration command
220
221 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
222 |=(% style="width: 42px;background-color:#4F81BD;color:white" %)Address|=(% style="width: 53px;background-color:#4F81BD;color:white" %)Function code|=(% style="width: 53px;background-color:#4F81BD;color:white" %)Address high|=(% style="width: 53px;background-color:#4F81BD;color:white" %)Address low|=(% style="width: 53px;background-color:#4F81BD;color:white" %)Quantity high|=(% style="width: 53px; background-color: rgb(79, 129, 189); color: white;" %)Quantity low|=(% style="width: 53px; background-color: rgb(79, 129, 189); color: white;" %)Data length|=(% style="width: 53px;background-color:#4F81BD;color:white" %)Data|=(% style="width: 53px;background-color:#4F81BD;color:white" %)CRC16 low|=(% style="width: 53px;background-color:#4F81BD;color:white" %)CRC16 high
223 |(% style="width:99px" %)0X11|(% style="width:112px" %)0X10|(% style="width:135px" %)0X00|(% style="width:126px" %)0X26|(% style="width:85px" %)0X00|(% style="width:1px" %)0X02|(% style="width:1px" %)0X04|(% style="width:1px" %)(((
224 0X00
225 0X01
226 0XF7
227 0X20
228 )))|(% style="width:1px" %)0X33|(% style="width:1px" %)0X75
229
230 12880*10 gives 0X01F720
231
232 **response:**
233
234 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
235 |=(% style="width: 42px;background-color:#4F81BD;color:white" %)Address|=(% style="width: 68px;background-color:#4F81BD;color:white" %)Function code|=(% style="width: 68px;background-color:#4F81BD;color:white" %)Address high|=(% style="width: 68px;background-color:#4F81BD;color:white" %)Address low|=(% style="width: 68px;background-color:#4F81BD;color:white" %)Quantity high|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Quantity low|=(% style="width: 68px;background-color:#4F81BD;color:white" %)CRC16 low|=(% style="width: 68px;background-color:#4F81BD;color:white" %)CRC16 high
236 |(% style="width:99px" %)0X11|(% style="width:112px" %)0X06|(% style="width:135px" %)0X00|(% style="width:126px" %)0X26|(% style="width:85px" %)0X00|(% style="width:1px" %)0X02|(% style="width:1px" %)0XEB|(% style="width:1px" %)0X50
237
238 = 2. DR-PH01 Water PH Sensor =
239
240 == 2.1 Specification ==
241
242
243 * **Power Input**: DC7~~30
244
245 * **Power Consumption** : < 0.5W
246
247 * **Interface**: RS485. 9600 Baud Rate
248
249 * **pH measurement range**: 0~~14.00pH; resolution: 0.01pH
250
251 * **pH measurement error**: ±0.15pH
252
253 * **Repeatability error**: ±0.02pH
254
255 * **Temperature measurement range**:0~~60°C; resolution: 0.1°C (set temperature for manual temperature compensation, default 25°C)
256
257 * **Temperature measurement error**: ±0.5°C
258
259 * **Temperature Measure Range**: -20 ~~ 60 °C
260
261 * **Temperature Accuracy: **±0.5 °C
262
263 * **IP Rated**: IP68
264
265 * **Max Pressure**: 0.6MPa
266
267 == 2.2 Wiring ==
268
269
270 [[image:image-20240720172548-2.png||height="348" width="571"]]
271
272
273 == 2.3 Mechinical Drawing ==
274
275
276 [[image:image-20240714174241-2.png]]
277
278
279 == 2.4 Installation Notice ==
280
281
282 Do not power on while connect the cables. Double check the wiring before power on.
283
284 Installation Photo as reference:
285
286 (% style="color:blue" %)**Submerged installation:**
287
288 The lead wire of the equipment passes through the waterproof pipe, and the 3/4 thread on the top of the equipment is connected to the 3/4 thread of the waterproof pipe with raw tape. Ensure that the top of the equipment and the equipment wire are not flooded.
289
290 [[image:image-20240718191348-6.png]]
291
292 (% style="color:blue" %)**Pipeline installation:**
293
294 Connect the equipment to the pipeline through the 3/4 thread.
295
296 [[image:image-20240718191336-5.png||height="239" width="326"]]
297
298 (% style="color:blue" %)**Sampling:**
299
300 Take representative water samples according to sampling requirements. If it is inconvenient to take samples, you can also put the electrode into the solution to be tested and read the output data. After a period of time, take out the electrode and clean it.
301
302 (% style="color:blue" %)**Measure the pH of the water sample:**
303
304 First rinse the electrode with distilled water, then rinse it with the water sample, then immerse the electrode in the sample, carefully shake the test cup or stir it to accelerate the electrode balance, let it stand, and record the pH value when the reading is stable.
305
306
307 == 2.5 Maintenance ==
308
309
310 * The equipment itself generally does not require daily maintenance. When an obvious fault occurs, please do not open it and repair it yourself. Contact us as soon as possible!
311
312 * There is an appropriate amount of soaking solution in the protective bottle at the front end of the electrode. The electrode head is soaked in it to keep the glass bulb and the liquid junction activated. When measuring, loosen the bottle cap, pull out the electrode, and rinse it with pure water before use.
313
314 * Preparation of electrode soaking solution: Take a packet of PH4.00 buffer, dissolve it in 250 ml of pure water, and soak it in 3M potassium chloride solution. The preparation is as follows: Take 25 grams of analytical pure potassium chloride and dissolve it in 100 ml of pure water.
315
316 * The glass bulb at the front end of the electrode cannot come into contact with hard objects. Any damage and scratches will make the electrode ineffective.
317
318 * Before measurement, the bubbles in the electrode glass bulb should be shaken off, otherwise it will affect the measurement. When measuring, the electrode should be stirred in the measured solution and then placed still to accelerate the response.
319
320 * The electrode should be cleaned with deionized water before and after measurement to ensure accuracy.
321
322 * After long-term use, the pH electrode will become passivated, which is characterized by a decrease in sensitivity gradient, slow response, and inaccurate readings. At this time, the bulb at the bottom of the electrode can be soaked in 0.1M dilute hydrochloric acid for 24 hours (0.1M dilute hydrochloric acid preparation: 9 ml of hydrochloric acid is diluted to 1000 ml with distilled water), and then soaked in 3.3M potassium chloride solution for 24 hours. If the pH electrode is seriously passivated and soaking in 0.1M hydrochloric acid has no effect, the pH electrode bulb can be soaked in 4% HF (hydrofluoric acid) for 3-5 seconds, washed with pure water, and then soaked in 3.3M potassium chloride solution for 24 hours to restore its performance.
323
324 * Glass bulb contamination or liquid junction blockage can also cause electrode passivation. At this time, it should be cleaned with an appropriate solution according to the nature of the contaminant.
325
326 * The equipment should be calibrated before each use. For long-term use, it is recommended to calibrate once every 3 months. The calibration frequency should be adjusted appropriately according to different application conditions (degree of dirt in the application, deposition of chemical substances, etc.). After aging, the electrodes should be replaced in time.
327
328
329 == 2.6 RS485 Commands ==
330
331
332 RS485 signaldefault address 0x10
333 Standard Modbus-RTU protocol, baud rate: 9600; check bit: none; data bit: 8; stop bit: 1
334
335
336 === 2.6.1 Query address ===
337
338
339 **send:**
340
341 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
342 |=(% style="width: 64.75px;background-color:#4F81BD;color:white" %)Original address|=(% style="width: 64.75px;background-color:#4F81BD;color:white" %)Function code|=(% style="width: 64.75px;background-color:#4F81BD;color:white" %)Address high|=(% style="width: 64.75px;background-color:#4F81BD;color:white" %)Address low|=(% style="width: 64.75px;background-color:#4F81BD;color:white" %)Quantity high|=(% style="width: 64.75px; background-color: rgb(79, 129, 189); color: white;" %)Quantity low|=(% style="width: 64.75px;background-color:#4F81BD;color:white" %)CRC16 low|=(% style="width: 64.75px;background-color:#4F81BD;color:white" %)CRC16 high
343 |(% style="width:99px" %)0XFE |(% style="width:112px" %)0X03|(% style="width:135px" %)0X00|(% style="width:126px" %)0X50|(% style="width:85px" %)0X00|(% style="width:1px" %)0X00|(% style="width:1px" %)0X51|(% style="width:1px" %)0XD4
344
345 **response:**
346
347 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
348 |=(% style="width: 103.6px;background-color:#4F81BD;color:white" %)New address|=(% style="width: 103.6px;background-color:#4F81BD;color:white" %)Function code|=(% style="width: 103.6px; background-color: rgb(79, 129, 189); color: white;" %)Data length|=(% style="width: 103.6px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low|=(% style="width: 103.6px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
349 |(% style="width:99px" %)0X01|(% style="width:112px" %)0X03|(% style="width:106px" %)0X00|(% style="width:93px" %)0X20|(% style="width:104px" %)0XF0
350
351 === 2.6.2 Change address ===
352
353
354 For example: Change the address of the sensor with address 1 to 2, master → slave
355
356 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
357 |=(% style="width: 64.75px;background-color:#4F81BD;color:white" %)Original address|=(% style="width: 64.75px;background-color:#4F81BD;color:white" %)Function code|=(% style="width: 64.75px;background-color:#4F81BD;color:white" %)Address high|=(% style="width: 64.75px;background-color:#4F81BD;color:white" %)Address low|=(% style="width: 64.75px;background-color:#4F81BD;color:white" %)Quantity high|=(% style="width: 64.75px; background-color: rgb(79, 129, 189); color: white;" %)Quantity low|=(% style="width: 64.75px;background-color:#4F81BD;color:white" %)CRC16 low|=(% style="width: 64.75px;background-color:#4F81BD;color:white" %)CRC16 high
358 |(% style="width:99px" %)0X01|(% style="width:112px" %)0X06|(% style="width:135px" %)0X00|(% style="width:126px" %)0X50|(% style="width:85px" %)0X00|(% style="width:1px" %)0X02|(% style="width:1px" %)0X08|(% style="width:1px" %)0X1A
359
360 If the sensor receives correctly, the data is returned along the original path.
361
362 (% style="color:red" %)**Note: If you forget the original address of the sensor, you can use the broadcast address 0XFE instead. When using 0XFE, the host can only connect to one slave, and the return address is still the original address, which can be used as a method of address query.**
363
364
365 === 2.6.3 Modify intercept ===
366
367
368 **send:**
369
370 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
371 |=(% style="width: 44.75px; background-color: rgb(79, 129, 189); color: white;" %)Address|=(% style="width: 64.75px; background-color: rgb(79, 129, 189); color: white;" %)Function code|=(% style="width: 69.75px; background-color: rgb(79, 129, 189); color: white;" %)Starting register address high|=(% style="width: 69.75px; background-color: rgb(79, 129, 189); color: white;" %)Starting register address  low|=(% style="width: 69.75px; background-color: rgb(79, 129, 189); color: white;" %)Register Length high|=(% style="width: 69.75px; background-color: rgb(79, 129, 189); color: white;" %)Register Length low|=(% style="width: 64.75px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low|=(% style="width: 64.75px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
372 |(% style="width:71px" %)0X10|(% style="width:74px" %)0X06|(% style="width:67px" %)0X00|(% style="width:68px" %)0X10|(% style="width:69px" %)0X00|(% style="width:66px" %)0X64|(% style="width:57px" %)0X8A|(% style="width:57px" %)(((
373 0XA5
374 )))
375
376 Change the intercept of the sensor at address 10 to 1 (default is 0). You need to pass the intercept 1*100 =100 into the command 0x006.
377
378 **response:**
379
380 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
381 |=(% style="width: 42px;background-color:#4F81BD;color:white" %)Address|=(% style="width: 68px;background-color:#4F81BD;color:white" %)Function code|=(% style="width: 68px;background-color:#4F81BD;color:white" %)Address high|=(% style="width: 68px;background-color:#4F81BD;color:white" %)Address low|=(% style="width: 68px;background-color:#4F81BD;color:white" %)Quantity high|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Quantity low|=(% style="width: 68px;background-color:#4F81BD;color:white" %)CRC16 low|=(% style="width: 68px;background-color:#4F81BD;color:white" %)CRC16 high
382 |(% style="width:99px" %)0X10|(% style="width:112px" %)0X06|(% style="width:135px" %)(((
383 0X00
384 )))|(% style="width:126px" %)0X10|(% style="width:85px" %)0X00|(% style="width:1px" %)0X64|(% style="width:1px" %)0X8A|(% style="width:1px" %)(((
385 0XA5
386 )))
387
388 === 2.6.4 Query data ===
389
390
391 Query the data (PH) of the sensor (address 10), host → slave
392
393 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
394 |=(% style="width: 42px;background-color:#4F81BD;color:white" %)Address|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Function code|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Starting register address high|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Starting register address low|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Register length high|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Register length low|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
395 |(% style="width:99px" %)0X10|(% style="width:72px" %)0X03|(% style="width:64px" %)0X00|(% style="width:68px" %)0X00|(% style="width:70px" %)0X00|(% style="width:72px" %)0X01|(% style="width:56px" %)0X87|(% style="width:56px" %)0X4B
396
397 If the sensor receives correctly, the following data will be returned, slave → host
398
399 (% border="1" cellspacing="3" style="background-color:#f2f2f2;width:518px" %)
400 |=(% style="width: 44px;background-color:#4F81BD;color:white" %)Address|=(% style="width: 79px; background-color: rgb(79, 129, 189); color: white;" %)Function code|=(% style="width: 79px; background-color: rgb(79, 129, 189); color: white;" %)Data length|=(% style="width: 79px; background-color: rgb(79, 129, 189); color: white;" %)Register 0 Data high|=(% style="width: 79px; background-color: rgb(79, 129, 189); color: white;" %)Register 0 Data low|=(% style="width: 79px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low|=(% style="width: 79px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
401 |(% style="width:99px" %)0X10|(% style="width:72px" %)0X03|(% style="width:68px" %)0X02|(% style="width:70px" %)0X02|(% style="width:72px" %)0XAE|(% style="width:56px" %)0XC4|(% style="width:56px" %)0X9B
402
403 The query data command is 10 03 00 00 00 01 87 4B. After the query, 7 bytes will be returned.
404
405 For example, the returned data is 10 03 02 (% style="color:red" %)**02 AE**(%%) C4 9B.
406
407 02 AE is the pH value, which is converted into decimal to get 686, and then two decimal places are added to get the actual value. 02 AE means the current pH value is 6.86.
408
409
410 === 2.6.5 Calibration Method ===
411
412
413 This device uses three-point calibration, and three known pH standard solutions need to be prepared.
414
415 (% style="color:blue" %)**The calibration steps are as follows:**
416
417 (1) Place the electrode in distilled water to clean it, and then place it in 9.18 standard buffer solution. After the data stabilizes, enter the following calibration command, and the 9.18 calibration is completed.
418
419 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
420 |=(% style="width: 64px; background-color: rgb(79, 129, 189); color: white;" %)Address|=(% style="width: 72px; background-color: rgb(79, 129, 189); color: white;" %)Function code|=(% style="width: 66px; background-color: rgb(79, 129, 189); color: white;" %)Address high|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Address low|=(% style="width: 72px; background-color: rgb(79, 129, 189); color: white;" %)Quantity high|=(% style="width: 70px; background-color: rgb(79, 129, 189); color: white;" %)Quantity low|=(% style="width: 55px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low|=(% style="width: 55px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
421 |(% style="width:64px" %)0X10|(% style="width:72px" %)0X06|(% style="width:66px" %)(((
422 0X00
423 )))|(% style="width:68px" %)0X20|(% style="width:72px" %)0XFF|(% style="width:70px" %)0XFF|(% style="width:55px" %)0X8A|(% style="width:55px" %)(((
424 0XF1
425 )))
426
427 (2) Wash the electrode in distilled water and place it in 6.86 standard buffer. After the data stabilizes, enter the following calibration command. The 6.86 calibration is completed.
428
429 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
430 |=(% style="width: 64px; background-color: rgb(79, 129, 189); color: white;" %)Address|=(% style="width: 72px; background-color: rgb(79, 129, 189); color: white;" %)Function code|=(% style="width: 66px; background-color: rgb(79, 129, 189); color: white;" %)Address high|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Address low|=(% style="width: 72px; background-color: rgb(79, 129, 189); color: white;" %)Quantity high|=(% style="width: 70px; background-color: rgb(79, 129, 189); color: white;" %)Quantity low|=(% style="width: 55px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low|=(% style="width: 55px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
431 |(% style="width:64px" %)0X10|(% style="width:72px" %)0X06|(% style="width:66px" %)(((
432 0X00
433 )))|(% style="width:68px" %)0X21|(% style="width:72px" %)0XFF|(% style="width:70px" %)0XFF|(% style="width:55px" %)0XDB|(% style="width:55px" %)(((
434 0X31
435 )))
436
437 (3) Wash the electrode in distilled water and place it in 4.01 standard buffer. After the data stabilizes, enter the following calibration command, and the 4.00 calibration is completed.
438
439 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
440 |=(% style="width: 64px; background-color: rgb(79, 129, 189); color: white;" %)Address|=(% style="width: 72px; background-color: rgb(79, 129, 189); color: white;" %)Function code|=(% style="width: 66px; background-color: rgb(79, 129, 189); color: white;" %)Address high|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Address low|=(% style="width: 72px; background-color: rgb(79, 129, 189); color: white;" %)Quantity high|=(% style="width: 70px; background-color: rgb(79, 129, 189); color: white;" %)Quantity low|=(% style="width: 55px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low|=(% style="width: 55px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
441 |(% style="width:64px" %)0X10|(% style="width:72px" %)0X06|(% style="width:66px" %)(((
442 0X00
443 )))|(% style="width:68px" %)0X22|(% style="width:72px" %)0XFF|(% style="width:70px" %)0XFF|(% style="width:55px" %)0X2B|(% style="width:55px" %)(((
444 0X31
445 )))
446
447 After the above three steps are completed, the calibration is successful. The advantage of three-point calibration compared to two-point calibration is that the electrode is calibrated separately in the acid and alkali parts, thereby achieving accurate calibration of the full range and making the measurement data more accurate.
448
449
450 = 3. DR-ORP1 Water ORP Sensor =
451
452 == 3.1 Specification ==
453
454 * **Power Input**: DC7~~30
455 * **Measuring range**:** **-1999~~1999mV
456 **Resolution**: 1mV
457 * **Interface**: RS485. 9600 Baud Rate
458 * **Measurement error**: ±3mV
459 * **Stability**: ≤2mv/24 hours
460 * **Equipment working conditions**: Ambient temperature: 0-60℃ Relative humidity: <85%RH
461 * **IP Rated**: IP68
462 * **Max Pressure**: 0.6MPa
463
464 == 3.2 Wiring ==
465
466 [[image:image-20240720172620-3.png||height="378" width="620"]]
467
468
469 == 3.3 Mechinical Drawing ==
470
471 [[image:image-20240714174241-2.png]]
472
473 == 3.4 Installation Notice ==
474
475 Do not power on while connect the cables. Double check the wiring before power on.
476
477 Installation Photo as reference:
478
479 **~ Submerged installation:**
480
481 The lead wire of the equipment passes through the waterproof pipe, and the 3/4 thread on the top of the equipment is connected to the 3/4 thread of the waterproof pipe with raw tape. Ensure that the top of the equipment and the equipment wire are not flooded.
482
483 [[image:image-20240718191348-6.png]]
484
485 **~ Pipeline installation:**
486
487 Connect the equipment to the pipeline through the 3/4 thread.
488
489 [[image:image-20240718191336-5.png||height="239" width="326"]]
490
491
492 == 3.5 Maintenance ==
493
494
495 (1) The equipment itself generally does not require daily maintenance. When an obvious fault occurs, please do not open it and repair it yourself, and contact us as soon as possible.
496
497 (2) In general, ORP electrodes do not need to be calibrated and can be used directly. When there is doubt about the quality and test results of the ORP electrode, the electrode potential can be checked with an ORP standard solution to determine whether the ORP electrode meets the measurement requirements, and the electrode can be recalibrated or replaced with a new ORP electrode. The frequency of calibration or inspection of the measuring electrode depends on different application conditions (the degree of dirt in the application, the deposition of chemical substances, etc.).
498
499 (3) There is an appropriate soaking solution in the protective bottle at the front end of the electrode, and the electrode head is soaked in it to ensure the activation of the platinum sheet and the liquid junction. When measuring, loosen the bottle cap, pull out the electrode, and rinse it with pure water before use.
500
501 (4) Preparation of electrode soaking solution: Take 25 grams of analytical pure potassium chloride and dissolve it in 100 ml of pure water to prepare a 3.3M potassium chloride solution.
502
503 (5) Before measuring, the bubbles in the electrode glass bulb should be shaken off, otherwise it will affect the measurement. When measuring, the electrode should be stirred in the measured solution and then placed still to accelerate the response.
504
505 (6) The electrode should be cleaned with deionized water before and after the measurement to ensure the measurement accuracy.
506
507 (7) After long-term use, the ORP electrode will be passivated, which is manifested as a decrease in sensitivity gradient, slow response, and inaccurate readings. At this time, the platinum sheet at the bottom of the electrode can be soaked in 0.1M dilute hydrochloric acid for 24 hours (0.1M dilute hydrochloric acid preparation: 9 ml of hydrochloric acid is diluted to 1000 ml with distilled water), and then soaked in 3.3M potassium chloride solution for 24 hours to restore its performance.
508
509 (8) Electrode contamination or liquid junction blockage can also cause electrode passivation. At this time, it should be cleaned with an appropriate solution according to the nature of the contaminant. If the platinum of the electrode is severely contaminated and an oxide film is formed, toothpaste can be applied to the platinum surface and then gently scrubbed to restore the platinum's luster.
510
511 (9) The equipment should be calibrated before each use. It is recommended to calibrate once every 3 months for long-term use. The calibration frequency should be adjusted appropriately according to different application conditions (degree of dirt in the application, deposition of chemical substances, etc.). After aging, the electrodes should be replaced in time.
512
513 == 3.6 RS485 Commands ==
514
515
516 RS485 signaldefault address 0x13
517 Standard Modbus-RTU protocol, baud rate: 9600; check bit: none; data bit: 8; stop bit: 1
518
519 === 3.6.1 Query address ===
520
521 send
522
523 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:676.25px" %)
524 |=(% style="width: 50px;background-color:#4F81BD;color:white" %)Original address|=(% style="width: 50px;background-color:#4F81BD;color:white" %)Function code|=(% style="width: 50px;background-color:#4F81BD;color:white" %)Address high|=(% style="width: 50px;background-color:#4F81BD;color:white" %)Address low|=(% style="width: 50px;background-color:#4F81BD;color:white" %)Quantity high|=(% style="width: 1px; background-color: rgb(79, 129, 189); color: white;" %)Quantity low|=(% style="width: 50px;background-color:#4F81BD;color:white" %)CRC16 low|=(% style="width: 50px;background-color:#4F81BD;color:white" %)CRC16 high
525 |(% style="width:99px" %)0XFE |(% style="width:112px" %)0X03|(% style="width:135px" %)0X00|(% style="width:126px" %)0X50|(% style="width:85px" %)0X00|(% style="width:1px" %)0X00|(% style="width:1px" %)0X51|(% style="width:1px" %)0XD4
526
527 response
528
529 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:561.333px" %)
530 |=(% style="width: 50px;background-color:#4F81BD;color:white" %)New address|=(% style="width: 50px;background-color:#4F81BD;color:white" %)Function code|=(% style="width: 106px; background-color: rgb(79, 129, 189); color: white;" %)Data length|=(% style="width: 93px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low|=(% style="width: 104px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
531 |(% style="width:99px" %)0X01|(% style="width:112px" %)0X03|(% style="width:106px" %)0X00|(% style="width:93px" %)0X20|(% style="width:104px" %)0XF0
532
533 === 3.6.2 Change address ===
534
535 For example: Change the address of the sensor with address 1 to 2, master → slave
536
537 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:676.25px" %)
538 |=(% style="width: 50px;background-color:#4F81BD;color:white" %)Original address|=(% style="width: 50px;background-color:#4F81BD;color:white" %)Function code|=(% style="width: 50px;background-color:#4F81BD;color:white" %)Address high|=(% style="width: 50px;background-color:#4F81BD;color:white" %)Address low|=(% style="width: 50px;background-color:#4F81BD;color:white" %)Quantity high|=(% style="width: 1px; background-color: rgb(79, 129, 189); color: white;" %)Quantity low|=(% style="width: 50px;background-color:#4F81BD;color:white" %)CRC16 low|=(% style="width: 50px;background-color:#4F81BD;color:white" %)CRC16 high
539 |(% style="width:99px" %)0X01|(% style="width:112px" %)0X06|(% style="width:135px" %)0X00|(% style="width:126px" %)0X50|(% style="width:85px" %)0X00|(% style="width:1px" %)0X02|(% style="width:1px" %)0X08|(% style="width:1px" %)0X1A
540
541 If the sensor receives correctly, the data is returned along the original path.
542 Note: If you forget the original address of the sensor, you can use the broadcast address 0XFE instead. When using 0XFE, the host can only connect to one slave, and the return address is still the original address, which can be used as a method of address query.
543
544
545 === 3.6.3 Modify intercept ===
546
547 send
548
549 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:676.25px" %)
550 |=(% style="width: 50px;background-color:#4F81BD;color:white" %)Address|=(% style="width: 50px;background-color:#4F81BD;color:white" %)Function code|=(% style="width: 67px; background-color: rgb(79, 129, 189); color: white;" %)Starting register address high|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Starting register address  low|=(% style="width: 69px; background-color: rgb(79, 129, 189); color: white;" %)Register Length high|=(% style="width: 66px; background-color: rgb(79, 129, 189); color: white;" %)Register Length low|=(% style="width: 50px;background-color:#4F81BD;color:white" %)CRC16 low|=(% style="width: 50px;background-color:#4F81BD;color:white" %)CRC16 high
551 |(% style="width:99px" %)0X13|(% style="width:112px" %)0X06|(% style="width:135px" %)0X00|(% style="width:126px" %)0X10|(% style="width:85px" %)0X00|(% style="width:1px" %)0X64|(% style="width:1px" %)0X8A|(% style="width:1px" %)(((
552 0X96
553 )))
554
555 Change the intercept of the sensor with address 1 to 10 (default 0), which is 0X000A in the command.
556
557 response
558
559 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:676.25px" %)
560 |=(% style="width: 50px;background-color:#4F81BD;color:white" %)Address|=(% style="width: 50px;background-color:#4F81BD;color:white" %)Function code|=(% style="width: 50px;background-color:#4F81BD;color:white" %)Address high|=(% style="width: 50px;background-color:#4F81BD;color:white" %)Address low|=(% style="width: 50px;background-color:#4F81BD;color:white" %)Quantity high|=(% style="width: 1px; background-color: rgb(79, 129, 189); color: white;" %)Quantity low|=(% style="width: 50px;background-color:#4F81BD;color:white" %)CRC16 low|=(% style="width: 50px;background-color:#4F81BD;color:white" %)CRC16 high
561 |(% style="width:99px" %)0X13|(% style="width:112px" %)0X06|(% style="width:135px" %)(((
562 0X00
563 )))|(% style="width:126px" %)0X10|(% style="width:85px" %)0X00|(% style="width:1px" %)0X64|(% style="width:1px" %)0X8A|(% style="width:1px" %)(((
564 0X96
565 )))
566
567 === 3.6.4 Query data ===
568
569
570 Query the data (ORP) of the sensor (address 13), host → slave
571
572 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:599.333px" %)
573 |=(% style="width: 50px;background-color:#4F81BD;color:white" %)Address|=(% style="width: 72px; background-color: rgb(79, 129, 189); color: white;" %)Function code|=(% style="width: 64px; background-color: rgb(79, 129, 189); color: white;" %)Starting register address high|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Starting register address low|=(% style="width: 70px; background-color: rgb(79, 129, 189); color: white;" %)Register length high|=(% style="width: 72px; background-color: rgb(79, 129, 189); color: white;" %)Register length low|=(% style="width: 56px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low|=(% style="width: 56px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
574 |(% style="width:99px" %)0X13|(% style="width:72px" %)0X03|(% style="width:64px" %)0X00|(% style="width:68px" %)0X00|(% style="width:70px" %)0X00|(% style="width:72px" %)0X01|(% style="width:56px" %)0X87|(% style="width:56px" %)0X78
575
576 If the sensor receives correctly, the following data will be returned, slave → host
577
578 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:599.333px" %)
579 |=(% style="width: 50px;background-color:#4F81BD;color:white" %)Address|=(% style="width: 72px; background-color: rgb(79, 129, 189); color: white;" %)Function code|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Data length|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Register 0 Data high|=(% style="width: 70px; background-color: rgb(79, 129, 189); color: white;" %)Register 0 Data low|=(% style="width: 56px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low|=(% style="width: 56px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
580 |(% style="width:99px" %)0X13|(% style="width:72px" %)0X03|(% style="width:68px" %)0X02|(% style="width:70px" %)0X02|(% style="width:72px" %)0XAE|(% style="width:56px" %)0X80|(% style="width:56px" %)0X9B
581
582 The query data command is 13 03 00 00 00 01 87 78
583
584 For example, the returned data is 13 03 02 (% style="color:red" %)**02 AE**(%%) 80 9B.
585
586 02 AE is the ORP value, converted to decimal, the actual value is 686, 02 AE means the current ORP value is 686mV
587
588
589 === 3.6.5 Calibration Method ===
590
591 This device uses two-point calibration, and two known ORP standard solutions need to be prepared. The calibration steps are as follows:
592 (1) Place the electrode in distilled water to clean it, and then place it in 86mV standard buffer solution. After the data stabilizes,
593 enter the following calibration command, and the 86mV point calibration is completed;
594
595 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:575.333px" %)
596 |=(% style="width: 64px; background-color: rgb(79, 129, 189); color: white;" %)Address|=(% style="width: 72px; background-color: rgb(79, 129, 189); color: white;" %)Function code|=(% style="width: 66px; background-color: rgb(79, 129, 189); color: white;" %)Address high|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Address low|=(% style="width: 72px; background-color: rgb(79, 129, 189); color: white;" %)Quantity high|=(% style="width: 70px; background-color: rgb(79, 129, 189); color: white;" %)Quantity low|=(% style="width: 55px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low|=(% style="width: 55px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
597 |(% style="width:64px" %)0X13|(% style="width:72px" %)0X06|(% style="width:66px" %)(((
598 0X00
599 )))|(% style="width:68px" %)0X24|(% style="width:72px" %)0XFF|(% style="width:70px" %)0XFF|(% style="width:55px" %)0XCB|(% style="width:55px" %)(((
600 0X03
601 )))
602
603 Wash the electrode in distilled water and place it in 256mV standard buffer. After the data is stable, enter the following calibration command to complete the 256mV point calibration.
604
605 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:575.333px" %)
606 |=(% style="width: 64px; background-color: rgb(79, 129, 189); color: white;" %)Address|=(% style="width: 72px; background-color: rgb(79, 129, 189); color: white;" %)Function code|=(% style="width: 66px; background-color: rgb(79, 129, 189); color: white;" %)Address high|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Address low|=(% style="width: 72px; background-color: rgb(79, 129, 189); color: white;" %)Quantity high|=(% style="width: 70px; background-color: rgb(79, 129, 189); color: white;" %)Quantity low|=(% style="width: 55px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low|=(% style="width: 55px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
607 |(% style="width:64px" %)0X13|(% style="width:72px" %)0X06|(% style="width:66px" %)(((
608 0X00
609 )))|(% style="width:68px" %)0X25|(% style="width:72px" %)0XFF|(% style="width:70px" %)0XFF|(% style="width:55px" %)0X9A|(% style="width:55px" %)(((
610 0XC3
611 )))
612
613 = 4. DR-DO1 Dissolved Oxygen Sensor =
614
615
616
617 == 4.1 Specification ==
618
619
620 * **Measuring range**: 0-20mg/L, 0-50℃
621 * **Accuracy**: 3%, ±0.5℃
622 * **Resolution**: 0.01 mg/L, 0.01℃
623 * **Maximum operating pressure**: 6 bar
624 * **Output signal**: A: 4-20mA (current loop)B: RS485 (standard Modbus-RTU protocol, device default address: 01)
625 * **Power supply voltage**: 5-24V DC
626 * **Working environment**: temperature 0-60℃; humidity <95%RH
627 * **Power consumption**: ≤0.5W
628
629 == 4.2 wiring ==
630
631 [[image:image-20240720172632-4.png||height="390" width="640"]]
632
633
634 == (% id="cke_bm_224234S" style="display:none" %) (%%)4.3 Impedance requirements for current signals ==
635
636 [[image:image-20240718195414-8.png||height="100" width="575"]]
637
638
639 == 4.4 Mechinical Drawing ==
640
641
642 [[image:image-20240719155308-1.png||height="226" width="527"]]
643
644
645 == 4.5 Instructions for use and maintenance ==
646
647 * It can be directly put into water without adding a protective tube, ensuring the long-term stability, reliability and accuracy of the sensor.
648 * If the water conditions are complex and you want accurate data, you need to wipe the sensor probe frequently.
649
650 == 4.6 RS485 Commands ==
651
652 RS485 signaldefault address 0x14
653 Standard Modbus-RTU protocol, baud rate: 9600; check bit: none; data bit: 8; stop bit: 1
654
655 === 4.6.1 Query address ===
656
657 send
658
659 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:599.333px" %)
660 |=(% style="width: 50px;background-color:#4F81BD;color:white" %)Original address|=(% style="width: 72px; background-color: rgb(79, 129, 189); color: white;" %)Function code|=(% style="width: 64px; background-color: rgb(79, 129, 189); color: white;" %)Register address high|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Register address low|=(% style="width: 70px; background-color: rgb(79, 129, 189); color: white;" %)Register length high|=(% style="width: 72px; background-color: rgb(79, 129, 189); color: white;" %)Register length low|=(% style="width: 56px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low|=(% style="width: 56px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
661 |(% style="width:99px" %)0XFF|(% style="width:72px" %)0X03|(% style="width:64px" %)0X00|(% style="width:68px" %)0X0A|(% style="width:70px" %)0X00|(% style="width:72px" %)0X02|(% style="width:56px" %)0XF1|(% style="width:56px" %)0XD7
662
663 If you forget the original address of the sensor, you can use the broadcast address 0XFF instead. When using 0XFE, the host can only connect to one slave, which can be used as a method of address query.
664
665
666 response
667
668 Register 0 data high and register 0 data low indicate the actual address of the sensor: 1
669 Register 1 data high and register 1 data low indicate the sensor version
670
671 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:599.333px" %)
672 |=(% style="width: 50px;background-color:#4F81BD;color:white" %)Address|=(% style="width: 72px; background-color: rgb(79, 129, 189); color: white;" %)Function code|=(% style="width: 64px; background-color: rgb(79, 129, 189); color: white;" %)Data length|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Register 0 Data high|=(% style="width: 70px; background-color: rgb(79, 129, 189); color: white;" %)Register 0 Data low|=(% style="width: 70px; background-color: rgb(79, 129, 189); color: white;" %)Register 1 Data high|=(% style="width: 72px; background-color: rgb(79, 129, 189); color: white;" %)Register 1 Data low|=(% style="width: 56px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low|=(% style="width: 56px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
673 |(% style="width:99px" %)0XFF|(% style="width:72px" %)0X03|(% style="width:64px" %)0X04|(% style="width:68px" %)0X00|(% style="width:70px" %)0X01|(% style="width:72px" %)0X00|(% style="width:56px" %)0X00|(% style="width:56px" %)0XB4|(% style="width:56px" %)0X3C
674
675 === 4.6.2 Change address ===
676
677 For example: Change the address of the sensor with address 1 to 2(address range: 1-119), master → slave
678
679 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:907.333px" %)
680 |=(% style="width: 67px; background-color: rgb(79, 129, 189); color: white;" %)Original address|=(% style="width: 71px; background-color: rgb(79, 129, 189); color: white;" %)Function code|=(% style="width: 65px; background-color: rgb(79, 129, 189); color: white;" %)Starting register address high|=(% style="width: 65px; background-color: rgb(79, 129, 189); color: white;" %)Starting register address low|=(% style="width: 70px; background-color: rgb(79, 129, 189); color: white;" %)Register length high|=(% style="width: 72px; background-color: rgb(79, 129, 189); color: white;" %)Register length low|=(% style="width: 53px; background-color: rgb(79, 129, 189); color: white;" %)Data length|=(% style="width: 53px; background-color: rgb(79, 129, 189); color: white;" %)Start address high|=(% style="width: 53px; background-color: rgb(79, 129, 189); color: white;" %)Start address low|=(% style="width: 53px; background-color: rgb(79, 129, 189); color: white;" %)Sensor version|=(% style="width: 53px; background-color: rgb(79, 129, 189); color: white;" %)Sensor version|=(% style="width: 56px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low
681 |(% style="width:67px" %)0X01|(% style="width:71px" %)0X10|(% style="width:65px" %)0X00|(% style="width:65px" %)0X0A|(% style="width:70px" %)0X00|(% style="width:72px" %)0X02|(% style="width:53px" %)0X04|(% style="width:53px" %)0X00|(% style="width:72px" %)0X02|(% style="width:53px" %)0X00|(% style="width:53px" %)0X00|(% style="width:56px" %)0XD2|(% style="width:53px" %)0X10
682
683 response
684
685 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:599.333px" %)
686 |=(% style="width: 50px;background-color:#4F81BD;color:white" %)Address|=(% style="width: 72px; background-color: rgb(79, 129, 189); color: white;" %)Function code|=(% style="width: 64px; background-color: rgb(79, 129, 189); color: white;" %)Starting register address high|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Starting register address low|=(% style="width: 70px; background-color: rgb(79, 129, 189); color: white;" %)Register length high|=(% style="width: 72px; background-color: rgb(79, 129, 189); color: white;" %)Register length low|=(% style="width: 56px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low|=(% style="width: 56px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
687 |(% style="width:99px" %)0X01|(% style="width:72px" %)0X10|(% style="width:64px" %)0X00|(% style="width:68px" %)0X0A|(% style="width:70px" %)0X00|(% style="width:72px" %)0X02|(% style="width:56px" %)0X61|(% style="width:56px" %)0XCA
688
689 === 4.6.3 Query data ===
690
691
692 Query the data (dissolved oxygen) of the sensor (address 14), host → slave
693
694 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:599.333px" %)
695 |=(% style="width: 50px;background-color:#4F81BD;color:white" %)Address|=(% style="width: 72px; background-color: rgb(79, 129, 189); color: white;" %)Function code|=(% style="width: 64px; background-color: rgb(79, 129, 189); color: white;" %)Starting register address high|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Starting register address low|=(% style="width: 70px; background-color: rgb(79, 129, 189); color: white;" %)Register length high|=(% style="width: 72px; background-color: rgb(79, 129, 189); color: white;" %)Register length low|=(% style="width: 56px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low|=(% style="width: 56px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
696 |(% style="width:99px" %)0X14|(% style="width:72px" %)0X03|(% style="width:64px" %)0X00|(% style="width:68px" %)0X14|(% style="width:70px" %)0X00|(% style="width:72px" %)0X01|(% style="width:56px" %)0XC6|(% style="width:56px" %)0XCB
697
698 If the sensor receives correctly, the following data will be returned, slave → host
699
700 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:599.333px" %)
701 |=(% style="width: 50px;background-color:#4F81BD;color:white" %)Address|=(% style="width: 72px; background-color: rgb(79, 129, 189); color: white;" %)Function code|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Data length|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Register 0 Data high|=(% style="width: 70px; background-color: rgb(79, 129, 189); color: white;" %)Register 0 Data low|=(% style="width: 56px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low|=(% style="width: 56px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
702 |(% style="width:99px" %)0X14|(% style="width:72px" %)0X03|(% style="width:68px" %)0X02|(% style="width:70px" %)0X03|(% style="width:72px" %)0X78|(% style="width:56px" %)0XB5|(% style="width:56px" %)0X55
703
704 After the query, 7 bytes will be returned. For example, the returned data is 14 03 02 (% style="color:red" %)**03 78**(%%) B5 55. 03 78 is the value of dissolved oxygen.
705
706 Converted to decimal, it is 888. Add two decimal places to get the actual value. 03 78 means the current dissolved oxygen is 8.88mg/L
707
708
709 Query the data (temperature) of the sensor (address 14), host → slave
710
711 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:599.333px" %)
712 |=(% style="width: 50px;background-color:#4F81BD;color:white" %)Address|=(% style="width: 72px; background-color: rgb(79, 129, 189); color: white;" %)Function code|=(% style="width: 64px; background-color: rgb(79, 129, 189); color: white;" %)Starting register address high|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Starting register address low|=(% style="width: 70px; background-color: rgb(79, 129, 189); color: white;" %)Register length high|=(% style="width: 72px; background-color: rgb(79, 129, 189); color: white;" %)Register length low|=(% style="width: 56px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low|=(% style="width: 56px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
713 |(% style="width:99px" %)0X14|(% style="width:72px" %)0X03|(% style="width:64px" %)0X00|(% style="width:68px" %)0X11|(% style="width:70px" %)0X00|(% style="width:72px" %)0X01|(% style="width:56px" %)0XD6|(% style="width:56px" %)0XCA
714
715 If the sensor receives correctly, the following data will be returned, slave → host
716
717 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:599.333px" %)
718 |=(% style="width: 50px;background-color:#4F81BD;color:white" %)Address|=(% style="width: 72px; background-color: rgb(79, 129, 189); color: white;" %)Function code|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Data length|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Register 0 Data high|=(% style="width: 70px; background-color: rgb(79, 129, 189); color: white;" %)Register 0 Data low|=(% style="width: 56px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low|=(% style="width: 56px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
719 |(% style="width:99px" %)0X14|(% style="width:72px" %)0X03|(% style="width:68px" %)0X02|(% style="width:70px" %)0X09|(% style="width:72px" %)0XA4|(% style="width:56px" %)0XB2|(% style="width:56px" %)0X6C
720
721 After the query, 7 bytes will be returned. For example, the returned data is 14 03 02 (% style="color:red" %)**09 A4**(%%) B2 6C. 03 78 is the value of dissolved oxygen temperature.
722
723 Converted to decimal, it is 2468. Add two decimal places to get the actual value. 09 A4 means the current dissolved oxygen temperature is 24.68℃
724
725
726 = 5. DR-TS1 Water Turbidity Sensor =
727
728
729
730 == (% id="cke_bm_81470S" style="display:none" %) (%%)5.1 Specification ==
731
732 * **Measuring range**: 0.1～1000.0NTU
733 * **Accuracy**: ±5%
734 * **Resolution**: 0.1NTU
735 * **Stability**: ≤3mV/24 hours
736 * **Output signal**: A: 4～20 mA (current loop)B: RS485 (standard Modbus-RTU protocol, device default address: 01)
737 * **Power supply voltage**: 5～24V DC (when output signal is RS485)12～24V DC (when output signal is 4～20mA)
738 * **Working environment**: temperature 0～60℃; humidity ≤95%RH
739 * **Power consumption**: ≤0.5W
740
741 == 5.2 wiring ==
742
743 [[image:image-20240720172640-5.png||height="387" width="635"]]
744
745
746 == 5.3 Impedance requirements for current signals ==
747
748 [[image:image-20240718195414-8.png||height="100" width="575"]]
749
750
751 == 5.4 Mechinical Drawing ==
752
753 [[image:image-20240718195058-7.png||height="305" width="593"]]
754
755
756 == 5.5 Instructions for use and maintenance ==
757
758 * It can be directly put into water without adding a protective tube, ensuring the long-term stability, reliability and accuracy of the sensor.
759 * If the water conditions are complex and you want accurate data, you need to wipe the sensor probe frequently.
760
761 == 5.6 RS485 Commands ==
762
763
764 RS485 signaldefault address 0x15
765 Standard Modbus-RTU protocol, baud rate: 9600; check bit: none; data bit: 8; stop bit: 1
766
767 === 5.6.1 Query address ===
768
769 send
770
771 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:599.333px" %)
772 |=(% style="width: 50px;background-color:#4F81BD;color:white" %)Original address|=(% style="width: 72px; background-color: rgb(79, 129, 189); color: white;" %)Function code|=(% style="width: 64px; background-color: rgb(79, 129, 189); color: white;" %)Address high|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Address low|=(% style="width: 70px; background-color: rgb(79, 129, 189); color: white;" %)Quantity high|=(% style="width: 72px; background-color: rgb(79, 129, 189); color: white;" %)Quantity low|=(% style="width: 56px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low|=(% style="width: 56px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
773 |(% style="width:99px" %)0XFE |(% style="width:72px" %)0X03|(% style="width:64px" %)0X00|(% style="width:68px" %)0X50|(% style="width:70px" %)0X00|(% style="width:72px" %)0X00|(% style="width:56px" %)0X51|(% style="width:56px" %)0XD4
774
775 If you forget the original address of the sensor, you can use the broadcast address 0XFE instead. When using 0XFE, the host can only connect to one slave, which can be used as a method of address query.
776
777
778 response
779
780 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:561.333px" %)
781 |=(% style="width: 50px;background-color:#4F81BD;color:white" %)New address|=(% style="width: 50px;background-color:#4F81BD;color:white" %)Function code|=(% style="width: 106px; background-color: rgb(79, 129, 189); color: white;" %)Data length|=(% style="width: 93px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low|=(% style="width: 104px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
782 |(% style="width:99px" %)0X01|(% style="width:112px" %)0X03|(% style="width:106px" %)0X00|(% style="width:93px" %)0X20|(% style="width:104px" %)0XF0
783
784 === 5.6.2 Change address ===
785
786 For example: Change the address of the sensor with address 1 to 2, master → slave
787
788 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:676.25px" %)
789 |=(% style="width: 50px;background-color:#4F81BD;color:white" %)Original address|=(% style="width: 50px;background-color:#4F81BD;color:white" %)Function code|=(% style="width: 50px;background-color:#4F81BD;color:white" %)Address high|=(% style="width: 50px;background-color:#4F81BD;color:white" %)Address low|=(% style="width: 50px;background-color:#4F81BD;color:white" %)Quantity high|=(% style="width: 1px; background-color: rgb(79, 129, 189); color: white;" %)Quantity low|=(% style="width: 50px;background-color:#4F81BD;color:white" %)CRC16 low|=(% style="width: 50px;background-color:#4F81BD;color:white" %)CRC16 high
790 |(% style="width:99px" %)0X01|(% style="width:112px" %)0X06|(% style="width:135px" %)0X00|(% style="width:126px" %)0X50|(% style="width:85px" %)0X00|(% style="width:1px" %)0X02|(% style="width:1px" %)0X08|(% style="width:1px" %)0X1A
791
792 If the sensor receives correctly, the data is returned along the original path.
793 Note: If you forget the original address of the sensor, you can use the broadcast address 0XFE instead. When using 0XFE, the host can only connect to one slave, and the return address is still the original address, which can be used as a method of address query.
794
795 === 5.6.3 Query data ===
796
797
798 Query the data (turbidity) of the sensor (address 15), host → slave
799
800 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:599.333px" %)
801 |=(% style="width: 50px;background-color:#4F81BD;color:white" %)Address|=(% style="width: 72px; background-color: rgb(79, 129, 189); color: white;" %)Function code|=(% style="width: 64px; background-color: rgb(79, 129, 189); color: white;" %)Starting register address high|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Starting register address low|=(% style="width: 70px; background-color: rgb(79, 129, 189); color: white;" %)Register length high|=(% style="width: 72px; background-color: rgb(79, 129, 189); color: white;" %)Register length low|=(% style="width: 56px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low|=(% style="width: 56px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
802 |(% style="width:99px" %)0X15|(% style="width:72px" %)0X03|(% style="width:64px" %)0X00|(% style="width:68px" %)0X00|(% style="width:70px" %)0X00|(% style="width:72px" %)0X01|(% style="width:56px" %)0X87|(% style="width:56px" %)0X1E
803
804 If the sensor receives correctly, the following data will be returned, slave → host
805
806 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:599.333px" %)
807 |=(% style="width: 50px;background-color:#4F81BD;color:white" %)Address|=(% style="width: 72px; background-color: rgb(79, 129, 189); color: white;" %)Function code|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Data length|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Register 0 Data high|=(% style="width: 70px; background-color: rgb(79, 129, 189); color: white;" %)Register 0 Data low|=(% style="width: 56px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low|=(% style="width: 56px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
808 |(% style="width:99px" %)0X15|(% style="width:72px" %)0X03|(% style="width:68px" %)0X02|(% style="width:70px" %)0X02|(% style="width:72px" %)0X9A|(% style="width:56px" %)0X09|(% style="width:56px" %)0X4C
809
810 The query data command is 15 03 00 00 00 01 87 1E
811
812 For example, the returned data is 15 03 02 (% style="color:red" %)**02 9A**(%%) 09 4C
813
814 02 9A is the turbidity value, converted to decimal, it is 666, and then divided by 10, the actual value is 66.6, 02 9A means the current turbidity value is 66.6 NTU